AP7346 DUAL HIGH ACCURACY CURRENT LIMIT LDO WITH ENABLE Pin Assignments The AP7346 is a dual high accuracy current limit ,low dropout regulator with high output voltage accuracy, low RDS(ON), high PSRR, EN2 6 5 4 1 2 3 GND With its low power consumption and line and load transient response, the AP7346 is well suited for low power handheld communication equipment. VIN Each of regulators includes a voltage reference, error amplifier, current limit circuit and an enable input to turn on/ off output. With the integrated resistor network, fixed output voltage versions can be delivered. VOUT2 NEW PRODUCT low output noise and low quiescent current. This regulator is based on a CMOS process. EN1 Top View VOUT1 Description X2-DFN1212-6 The AP7346 is packaged in X2-DFN1212-6 package and allows for smallest footprint and dense PCB layout. Applications Features Low VIN and Wide VIN Range: 1.7V to 5.25V High Accuracy Current Limit: 157mA+/- 25mA VOUT Accuracy: ±1% Ripple Rejection: 75dB at 1kHz Low Output Noise: 60µVrms from 10Hz to 100kHz Quiescent Current as Low as 35µA VOUT Fixed 1.2V to 3.6V Totally Lead-Free & and Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free, Green Device (Note 3) Notes: Fingerprint Modular Smart Phone/PAD RF Supply Cameras Portable Video Portable Media Player Wireless Adapter Wireless Communication 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. Typical Applications Circuit AP7346 AP7346 Document number: DS38082 Rev. 1 - 2 1 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 Pin Descriptions Pin Name 1 VOUT1 Channel 1 output voltage pin 2 VOUT2 Channel 2 output voltage pin 3 GND Ground 4 EN2 Chanel 2 enable pin. This pin should be driven either high or low and must not be floating. Driving this pin high enables channel 2 output, while pulling it low puts Chanel 2 regulator into shutdown mode. 5 VIN Power input pin 6 EN1 Chanel 1 enable pin. This pin should be driven either high or low and must not be floating. Driving this pin high enables channel 1 output, while pulling it low puts Chanel 1 regulator into shutdown mode. – Thermal PAD In PCB layout, prefer to use large copper area to cover this pad for better thermal dissipation, then connect this area to GND or leave it open. However do not use it as GND electrode function alone. NEW PRODUCT Pin Number Function Functional Block Diagram EN1 VIN EN2 With Discharge AP7346 Document number: DS38082 Rev. 1 - 2 2 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified. Note 4) NEW PRODUCT Symbol Rating Unit VIN Input Voltage 6.0 V VEN Input Voltage at EN Pins 6.0 V VOUT Output Voltage -0.3 to VIN +0.3 V IOUT Output Current 130 mA PD Power Dissipation 600 mW TA Operating Ambient Temperature -40 to +85 °C Storage Temperature -55 to +125 °C TSTG Note 4: Parameter Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. Recommended Operating Conditions (@TA = +25°C, unless otherwise specified.) Symbol Parameter VIN Input Voltage IOUT Output Current TA Operating Ambient Temperature AP7346 Document number: DS38082 Rev. 1 - 2 3 of 14 www.diodes.com Min Max Unit 1.7 5.25 V 0 130 mA -40 +85 °C July 2015 © Diodes Incorporated AP7346 Electrical Characteristics (@TA = +25°C, VIN = VOUT+1V (VOUT > 1.5V), VIN = 2.5V (VOUT ≤ 1.5V), IOUT = 1mA, CIN = COUT = 1.0µF, unless otherwise specified.) Parameter Input Voltage Conditions TA = -40°C to +85°C VIN = (VOUT-NOM+1.0V) to Output Voltage Accuracy (Note 11) TA = +25°C Typ Max Unit 1.7 – 5.25 V -1 – 1 -1.5 – 1.5 5.25V, % TA = -40°C to +85°C IOUT = 1mA to 120mA NEW PRODUCT Min Line Regulation (∆VOUT/∆VIN/VOUT) VIN = (VOUT-NOM +1.0V) to 5.25V, IOUT = 1.0mA – 0.02 0.1 %/V Load Regulation (∆VOUT/∆IOUT) VIN = VOUT-NOM +1.0V, IOUT = 1mA to 120mA – 15 30 mV – 35 50 µA Quiescent Current (Note 6) Set EN1 high, set EN2 low, or set EN2 high, set EN1 low, No load Set EN1/EN2 high, No load – 70 100 µA ISTANDBY Set EN1/EN2 low, No load – 0.1 1.0 µA Output Current – 130 – – mA Fold-back Short Current (Note 7) VOUT short to ground – 55 – mA – 75 – dB – 60 – µVrms VOUT ≤ 1.2V – 0.48 0.59 1.2V < VOUT ≤ 1.4V – 0.39 0.50 1.4V < VOUT ≤ 1.7V – 0.35 0.44 1.7V < VOUT ≤ 2.1V – 0.30 0.39 2.1V < VOUT ≤ 2.5V – 0.26 0.34 2.5V < VOUT ≤ 3.0V – 0.25 0.30 3.0V < VOUT ≤ 3.6V – 0.22 0.29 PSRR (Note 8) Output Noise Voltage (Notes 8 & 9) Dropout Voltage (Note 5) VIN = (VOUT+1V) VDC + 0.2Vp-pAC, VOUT ≥1.8V, IOUT = 30mA f = 1kHz BW = 10Hz to 100kHz, IOUT = 30mA IOUT = 120mA V Output Voltage Temperature Coefficient IOUT = 30mA, TA = -40°C to +85°C – ±30 – ppm/°C EN Input Low Voltage – 0 – 0.5 V EN Input High Voltage – 1.3 – 5.25 V EN Input Leakage VEN = 0V, VIN = 5.0V or VEN = 5.0V, VIN = 0V -1.0 – 1.0 µA 132 157 182 mA – 50 – Ω OCP On Resistance of N-channel for Autodischarge (Note 10) Notes: VIN = 4.0V, VEN = 0V (Disabled) D Version Channels 1 & 2 5. Dropout voltage is the voltage difference between the input and the output at which the output voltage drops 2% below its nominal value. 6. Quiescent current defined here is the difference in current between the input and the output. 7. Short circuit current is measured with VOUT pulled to GND. 8. This specification is guaranteed by design. 9. To make sure lowest environment noise minimizes the influence on noise measurement. 10. AP7346 is available for built-in discharge. 11. Potential multiple grades based on following output voltage accuracy. AP7346 Document number: DS38082 Rev. 1 - 2 4 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 NEW PRODUCT Performance Characteristics AP7346 Document number: DS38082 Rev. 1 - 2 5 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 NEW PRODUCT Performance Characteristics (Cont.) AP7346 Document number: DS38082 Rev. 1 - 2 6 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 NEW PRODUCT Performance Characteristics (Cont.) Line Transient Response Waveforms（IOUT=30mA, tR=tF=5μs, CIN=none, COUT1=COUT2=0.47μF, TA= +25°C） 4 3 2 Input Voltage 1.82 Output Voltage 1.80 Input Voltage V IN (V) Output Voltage V OUT (V) VOUT =1.8V 1.78 0 20 40 60 80 100 Time t (µs) AP7346 Document number: DS38082 Rev. 1 - 2 7 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 Performance Characteristics (Cont.) Load Transient Response Waveforms (VIN=VOUT+1V, CIN=COUT1=COUT2=0.47μF, TA= +25°C) 3.4 3.3 Output Voltage IOUT=30mA 80 160 240 320 3.2 Output Current 50mA 100mA 3.4 3.3 3.2 Output Voltage 1.9 1.8 Output Voltage Iout=30mA 1.7 0 400 80 3.4 3.3 Output Voltage IOUT=30mA 160 240 320 3.2 Output Voltage V OUT (V) Output Voltage Output Current I OUT (mA) 200 100 0 Output Current 0.1mA 150mA 80 Document number: DS38082 Rev. 1 - 2 320 400 200 100 0 Output Current 0.1mA 130mA 3.4 3.3 3.2 1.9 Output Voltage 1.8 Output Voltage Iout=30mA 1.7 0 400 80 160 240 320 400 Time t (µs) Time t (µs) AP7346 240 VOUT =3.3V VOUT =1.8V 0 160 Time t (µs) Time t (µs) 1.9 1.8 1.7 Output Current I OUT (mA) Output Voltage 150 100 50 0 Output Current I OUT (mA) 1.9 1.8 1.7 Output Voltage V OUT (V) 150 100 50 0 Output Current IOUT (mA) Output Voltage V OUT (V) VOUT =3.3V Output Current 50mA 100mA 0 Output Voltage V OUT (V) NEW PRODUCT VOUT =1.8V 8 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 Performance Characteristics (Cont.) Turn On Waveform of Output Discharge Versions (VIN=VOUT+1V, CIN=COUT1=COUT2=0.47μF, TA= +25°C) VOUT = 3.3V 2 1 Output Voltage 0 40 80 120 IOUT=0mA IOUT=30mA IOUT=150mA 160 EN Input Voltage Output Voltage V OUT (V) 1 0 EN Input Voltage VEN (V) Output Voltage V OUT (V) 4 3 2 0 2 0 4 2 Output Voltage 0 200 0 40 Time t (µs) 80 120 IOUT=0mA IOUT=30mA IOUT=130mA 160 200 Time t (µs) Turn Off Waveform of Output Discharge versions (VIN=VOUT+1V, CIN=COUT1=COUT2=0.47μF, TA= +25°C) VOUT = 3.3V 2 Output Voltage IOUT=0mA IOUT=30mA IOUT=150mA 0 0 40 80 120 160 Output Voltage V OUT (V) 1 0 EN Input Voltage VEN (V) 3 2 1 2 Document number: DS38082 Rev. 1 - 2 0 4 2 Output Voltage IOUT=0mA IOUT=30mA IOUT=130mA 0 200 0 Time t (µs) AP7346 4 EN Input Voltage EN Input Voltage EN Input Voltage VEN (V) VOUT =1.8V Output Voltage V OUT (V) NEW PRODUCT EN Input Voltage EN Input Voltage VEN (V) VOUT =1.8V 40 80 120 160 200 Time t (µs) 9 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 Application Information Output Capacitor An output capacitor (COUT) is needed to improve transient response and maintain stability. The AP7346 is stable with very small ceramic output capacitors. The ESR (Equivalent Series Resistance) and capacitance drive the selection. If the application has large load variations, it is recommended to utilize low-ESR bulk capacitors. It is recommended to place ceramic capacitors as close as possible to the load and the GND pin and care should be taken to reduce the impedance in the layout. To prevent the input voltage from dropping during load steps, it is recommended to utilize an input capacitor (CIN). A minimum 0.47μF ceramic capacitor is recommended between VIN and GND pin to decouple input power supply glitch. This input capacitor must be located as close as possible to the device to assure input stability and reduce noise. For PCB layout, a wide copper trace is required for both VIN and GND pin. Enable Control The AP7346 is turned on by setting the EN pins high, and is turned off by pulling it low. If this feature is not used, the EN pins should be tied to VIN pin to keep the regulator output on at all time. To ensure proper operation, the signal source used to drive the EN pins must be able to swing above and below the specified turn-on/off voltage thresholds listed in the Electrical Characteristics section. Short Circuit Protection When VOUT pins are short-circuit to GND, short circuit protection will be triggered and clamp the output current to approximately 60mA. This feature protects the regulator from over-current and damage due to overheating. Layout Considerations For good ground loop and stability, the input and output capacitors should be located close to the input, output, and GND pin of the device. The regulator GND pin should be connected to the external circuit ground to reduce voltage drop caused by trace impedance. Ground plane is generally used to reduce trace impedance. Wide trace should be used for large current paths from V IN to VOUT, and load circuit. ESR vs. Output Current Ceramic type output capacitor is recommended for this series; however, the other output capacitors with low ESR also can be used. The relations between IOUT (Output Current) and ESR of an output capacitor are shown below. The stable region is marked as the hatched area in the graph. Measurement conditions: Frequency Band: 10Hz to 2MHz, Temperature: −40°C to +85°C. ESR vs. Output Current AP7346-18 ESR vs. Output Current AP7346-33 100 100 10 10 ESR (Ω) -40°C 85°C 1 ESR (Ω) NEW PRODUCT Input Capacitor 0.1 0.01 -40°C 85°C 1 0.1 0.01 0.001 0.001 0 50 100 150 200 250 300 Output Current IOUT (mA) AP7346 Document number: DS38082 Rev. 1 - 2 0 50 100 150 200 250 300 Output Current IOUT (mA) 10 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 Ordering Information AP7346X - XXXX XXX - X Output Discharge D : Output Discharge CH1 12 : 1.2V 15 : 1.5V 18 : 1.8V 25 : 2.5V 28 : 2.8V 30 : 3.0V 33 : 3.3V 36 : 3.6V NEW PRODUCT Device Package CH1/CH2 Output Voltage CH2 12 : 1.2V 15 : 1.5V 18 : 1.8V 25 : 2.5V 28 : 2.8V 30 : 3.0V 33 : 3.3V FS6 : X2-DFN1212-6 7 : Tape & Reel 7” Tape and Reel Package Code Packaging FS6 X2-DFN1212-6 AP7346D-XXXXFS6-7 Packing Quantity Part Number Suffix 5000/Tape & Reel -7 Marking Information (1) X2-DFN1212-6 (Top View) XXX YWX XXX : Identification Code Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z represents 52 and 53 week X : Internal code Part Number VOUT1/VOUT2 Package Identification Code AP7346D-1218FS6-7 1.2V/1.8V X2-DFN1212-6 EAA AP7346D-1528FS6-7 1.5V/2.8V X2-DFN1212-6 EAB AP7346D-1815FS6-7 1.8V/1.5V X2-DFN1212-6 EAC AP7346D-1818FS6-7 1.8V/1.8V X2-DFN1212-6 EAD AP7346D-1828FS6-7 1.8V/2.8V X2-DFN1212-6 EAE AP7346D-1833FS6-7 1.8V/3.3V X2-DFN1212-6 EAF AP7346D-2518FS6-7 2.5V/1.8V X2-DFN1212-6 EAG AP7346 Document number: DS38082 Rev. 1 - 2 11 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 NEW PRODUCT Marking Information (Cont.) AP7346D-2812FS6-7 2.8V/1.2V X2-DFN1212-6 EAH AP7346D-2818FS6-7 2.8V/1.8V X2-DFN1212-6 EAJ AP7346D-2825FS6-7 2.8V/2.5V X2-DFN1212-6 EAK AP7346D-2833FS6-7 2.8V/3.3V X2-DFN1212-6 EAM AP7346D-3018FS6-7 3.0V/1.8V X2-DFN1212-6 EAN AP7346D-3028FS6-7 3.0V/2.8V X2-DFN1212-6 EAP AP7346D-3030FS6-7 3.0V/3.0V X2-DFN1212-6 EAR AP7346D-3318FS6-7 3.3V/1.8V X2-DFN1212-6 EAS AP7346D-3328FS6-7 3.3V/2.8V X2-DFN1212-6 EAT AP7346D-3330FS6-7 3.3V/3.0V X2-DFN1212-6 EAU AP7346D-3333FS6-7 3.3V/3.3V X2-DFN1212-6 EAV AP7346D-3612FS6-7 3.6V/1.2V X2-DFN1212-6 EAW Package Outline Dimensions (All dimensions in mm.) Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version. (1) Package Type: X2-DFN1212-6 A1 A A3 Seating Plane X2-DFN1212-6 Dim Min Max Typ A - 0.40 0.39 A1 0.00 0.05 0.020 A3 0.13 b 0.13 0.23 0.18 D 1.15 1.25 1.20 D2 0.89 0.99 0.94 E 1.15 1.25 1.20 E2 0.25 0.35 0.30 e 0.40 k 0.15 0.25 0.20 L 0.15 0.25 0.20 z 0.11 z1 0.05 All Dimensions in mm D Pin 1 ID C0.15 z1 D2 E2 k E L b z e AP7346 Document number: DS38082 Rev. 1 - 2 12 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 Suggested Pad Layout Please see AP02001 at http://www.diodes.com/datasheets/ap02001.pdf for the latest version. (1) Package Type: X2-DFN1212-6 X2 C Dimensions NEW PRODUCT Y1 X1 C G X X1 X2 Y Y1 Y2 G Y2 Y Value (in mm) 0.400 0.150 0.250 0.940 1.050 0.400 0.300 1.400 X Tape Orientation XX YWX XX YWX XX YWX Pin 1 Note: The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf. AP7346 Document number: DS38082 Rev. 1 - 2 13 of 14 www.diodes.com July 2015 © Diodes Incorporated AP7346 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). NEW PRODUCT Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. 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Copyright © 2015, Diodes Incorporated www.diodes.com AP7346 Document number: DS38082 Rev. 1 - 2 14 of 14 www.diodes.com July 2015 © Diodes Incorporated